1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2019 MediaTek Inc. 3 * 4 * Author: Felix Fietkau <nbd@nbd.name> 5 * Lorenzo Bianconi <lorenzo@kernel.org> 6 * Sean Wang <sean.wang@mediatek.com> 7 */ 8 #include <linux/kernel.h> 9 #include <linux/module.h> 10 11 #include "mt7615.h" 12 #include "mac.h" 13 #include "mcu.h" 14 #include "regs.h" 15 16 static int 17 mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, 18 int cmd, bool wait_resp) 19 { 20 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 21 int ret, seq, ep, len, pad; 22 23 mutex_lock(&mdev->mcu.mutex); 24 25 mt7615_mcu_fill_msg(dev, skb, cmd, &seq); 26 if (cmd != MCU_CMD_FW_SCATTER) 27 ep = MT_EP_OUT_INBAND_CMD; 28 else 29 ep = MT_EP_OUT_AC_BE; 30 31 len = skb->len; 32 put_unaligned_le32(len, skb_push(skb, sizeof(len))); 33 pad = round_up(skb->len, 4) + 4 - skb->len; 34 ret = mt76_skb_adjust_pad(skb, pad); 35 if (ret < 0) 36 goto out; 37 38 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 39 1000, ep); 40 if (ret < 0) 41 goto out; 42 43 if (wait_resp) 44 ret = mt7615_mcu_wait_response(dev, cmd, seq); 45 46 out: 47 mutex_unlock(&mdev->mcu.mutex); 48 dev_kfree_skb(skb); 49 50 return ret; 51 } 52 53 int mt7663u_mcu_init(struct mt7615_dev *dev) 54 { 55 static const struct mt76_mcu_ops mt7663u_mcu_ops = { 56 .headroom = MT_USB_HDR_SIZE + sizeof(struct mt7615_mcu_txd), 57 .tailroom = MT_USB_TAIL_SIZE, 58 .mcu_skb_send_msg = mt7663u_mcu_send_message, 59 .mcu_send_msg = mt7615_mcu_msg_send, 60 .mcu_parse_response = mt7615_mcu_parse_response, 61 .mcu_restart = mt7615_mcu_restart, 62 }; 63 int ret; 64 65 dev->mt76.mcu_ops = &mt7663u_mcu_ops, 66 67 /* usb does not support runtime-pm */ 68 clear_bit(MT76_STATE_PM, &dev->mphy.state); 69 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 70 71 if (test_and_clear_bit(MT76_STATE_POWER_OFF, &dev->mphy.state)) { 72 mt7615_mcu_restart(&dev->mt76); 73 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, 74 MT_TOP_MISC2_FW_PWR_ON, 0, 500)) 75 return -EIO; 76 77 ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON, 78 USB_DIR_OUT | USB_TYPE_VENDOR, 79 0x0, 0x1, NULL, 0); 80 if (ret) 81 return ret; 82 83 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, 84 MT_TOP_MISC2_FW_PWR_ON, 85 FW_STATE_PWR_ON << 1, 500)) { 86 dev_err(dev->mt76.dev, "Timeout for power on\n"); 87 return -EIO; 88 } 89 } 90 91 ret = __mt7663_load_firmware(dev); 92 if (ret) 93 return ret; 94 95 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 96 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); 97 98 return 0; 99 } 100